Being smaller they can and should user human moderation. Twitter and Facebook have problems because of the huge number of posts. Parler is still small enough that then _can_ moderate.
Facebook is in a way better position financially to use human moderators than something like Parler is. Sure, Parler has orders of magnitude less volume. They also have orders of magnitude less money. Facebook can afford to hire 1,000 human moderators for every 1 human moderator Parler hires.
This whole "Parler can be better than Facebook because they are smaller" argument is just as illogical as it sounds.
“Five million people were active on Parler on Monday, which Mr. Matze wrote was an 8-fold increase in user engagement from the previous week.”
https://m.washingtontimes.com/news/2020/nov/10/parler-says-i...
This doesn’t seem like a problem that could be solved with more human eyeballs.